To use your Harmony Touch to control your PlayStation 3, you'll need to first pair it with a Logitech Harmony Adapter for PS3 (see answer 360023412813). Then, add your PlayStation 3 as a device on your Harmony account. Here's how:

NOTE: If you already have a PlayStation3 device in your account, the codes might need to be updated.  To update the codes, you'll need to delete the device and then re-add it (see answer 360023412813).

1. Log in to your account on myharmony.com.

2. Select your Harmony Touch from the Welcome screen.

3. Click Devices.

4. Click Add Device.

5. Enter "Sony" as the Manufacturer and "PlayStation3" as the Model Number, and then click Add.

6. Click Yes to confirm your device.

You're now ready to add your PlayStation 3 device to an activity.  For more information on Harmony Activities, see answer 360023412813.